Back in the mid 70’s while on the job, I drove by a box along the side of the road at least eight times. The box stayed there all day and when I got off work I drove my car to where the box was and it was still there. Inside was a new unused 5 gal. safety gas can that looks exactly like the one at the amazon link below.
The can has been used continuously since I got it home. I keep it full and stored in my attached garage. Never had a problem.
Recently I began to use it for storage of non ethanol laced gasoline. This type gas will allow your small gasoline engine powered tools to last longer without fouling out the carburetors. I have a new chain saw and plan to use the ethanol free gasoline in it because I’ve been told that the number one cause of failure for them was using ethanol laced gasoline.
Believe it. I went through 4 weed eaters, and a leaf blower before I figured out what was killing them. They didn't last a season (soeveral only a few weeks!), and I was beginning to think I had some sort of small engine killer aura before I figured it out. Since I have switched to "pure" gas, I have now gotten a weed eater to last over a year, and my chain saw has been working good for several years.
Here is a link to a website that shows the locations of gas stations selling non-ethanol gasoline.